Polymerisation der Äthylen‐Kohlenwasserstoffe bei hohen Temperaturen und Drucken

Ipatiew, W.

doi:10.1002/cber.191104403146

Cited by 22 publications

(6 citation statements)

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“…are Ipatieff (14), Davidson (2), Hague and Wheeler (11), Hurd (13), and Frolich with his co-workers (8). However, a simple consideration of the classical van't Hoff-Le Bel space models of paraffin or unsaturated hydrocarbons with six or more carbon atoms in a row shows that they have a natural tendency to form six carbon atom rings-this is in conformity with von Baeyer's strain theory.…”

mentioning

confidence: 86%

Catalytic Cyclization of Aliphatic Hydrocarbons to Aromatics

George¹,

Morrell²,

Mattox³

1940

Ind. Eng. Chem.

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problem of converting aliphatic hydrocarbons into aromatics is an old one. The importance of the successful solution of this problem lies in the value of aromatics as high antiknock motor fuels, solvents, raw material for explosives (TNT), and a practically endless variety of organic chemicals useful for dye intermediates, pharmaceuticals, medicináis, synthetic resins, etc. It is extremely important from the viewpoint that a practically unlimited supply of raw material is available in the form of petroleum and coal per se, whereas the present source of raw materials for aromatics is coal tar of which there is only a limited supply.Various solutions of the problem have been attempted by purely thermal cracking ever since Faraday's memorable discovery (7) of benzene in 1825.Faraday's work was followed by investigations by a number of technologists among whom Letny (15), Rudnew (SO), Dvorkovitch (8), Nikiforoff (17), Pamfilow (18), and Zelinsky (22) should be mentioned. During the World War extensive investigations were carried out in this country by Rittman (19) and Egloff with Twomey and Moore (6).In these investigations (4) it has been usually assumed, with the work of Berthelot (1) and Haber (10) as a basis, that the aromatics are formed over the acetylene or ethylene route.

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mentioning

confidence: 86%

Catalytic Cyclization of Aliphatic Hydrocarbons to Aromatics

George¹,

Morrell²,

Mattox³

1940

Ind. Eng. Chem.

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“…For it to take place rapidly, this polymerization reaction requires comparatively high temperatures; its activation energy is given as 38-42 kcal/mole for the olefins from ethylene to hexene [4], Ethylene reacts most readily in thermal polymerization, but even this is fairly stable on heating to 300° under various pressures. At 70 atm, the polymerization begins at 325° and is vigorous at 380° [5]. The evolution of heat may lead to explosions.…”

Section: A Thermal Polymerization (A) Generalmentioning

confidence: 99%

“…To give a picture of the course of an alkylation with catalyst prepared outside the reaction vessel, extracts of some experimental results of HOLLO-WAY and BONNELL are given in [4][5][6][7]2,3,2, * The theoretical yield of an alkylate ie 307%, when this is calculated on the ethylene consumed, since 28 g of ethylene and 58 g of isobutane should give 86 g of bi-isopropyl, and therefore 100 g of ethylene should give 307 g.…”

Section: (F) the Alkylation Of The Isoparaffins With Olefins Using Almentioning

confidence: 99%

“…In actual fact, the alkylate contains less than 1% of this hydrocarbon. It consists mainly of 2,2,4-, 2,3,4-, and 2,3,3-trimethylpentanes. In addition, it contains paraffinic hydrocarbons with 5,6,7,9,10, and 11 carbon atoms, although there is only a few per cent of each. Table 334 gives a typical composition of an alkylate obtained from isobutane and butene in the presence of concentrated sulphuric acid [113].…”

Section: Chg/ Ohmentioning

confidence: 99%

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The Working Up of Lower, Normally Gaseous Paraffins and Mono-Olefins to Give Carburettor Fuels

Asinger¹

1968

Mono-Olefins

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“…For example, cyclopentadiene on standing at ordinary temperatures, is converted into dicyclopentadiene without the aid of any reagent (11). Other hydrocarbons, such as hexylene (8), trimethylethylene (9), amylene (27), methylpropylethylene (15), aliene (19), isobutylene (20), and ethylene (1,6,12,16,24,25, 81), have been caused to undergo polymerization by the application of heat and pressure. Various catalysts have been found which accelerate the polymerization of nearly all types of unsaturated hydrocarbons (7, IS, 22, 28, 29).…”

mentioning

confidence: 99%